New smart window technology, developed by the National Renewable Energy Laboratory in the US, is showing great potential. Apart from keeping heat out of buildings, this smart window could also work as a solar panel and convert sunlight into energy.
However, as popular as these Low-E windows are for keeping the heat out of living and work spaces, there’s a potential energy feature that remains largely untapped and the National Renewable Energy Laboratory (NREL) might just have the technology to realize it.
Researchers from NREL have developed a prototype photovoltaic (solar powered) smart window that can keep heat out of buildings while, at the same time, providing solar energy. The smart windows, built from the energy-harvesting material perovskite, are thermochromic — meaning they can change color from clear to tinted in response to heat. “There are thermochromic technologies out there but nothing that actually converts that energy into electricity,” NREL scientist Lance Wheeler said in a press release.